1.Severe Tophaceous Gout Causing PTH-Independent Hypercalcemia: An Uncommon Association
Hu Chong Siang ; Kuan Yueh Chien ; Lee Ho Mi ; Cheong Yaw Kiet
Journal of the ASEAN Federation of Endocrine Societies 2026;41(S1):79-
Introduction:
Chronic tophaceous gout is a rare cause of parathyroid
hormone (PTH)-independent hypercalcemia. This is
due to increased 1-alpha hydroxylase activity within
granulomatous inflammation surrounding gouty tophi,
resulting in excess calcitriol production. In advanced
disease, immobilization from pain and joint deformity may
further exacerbate hypercalcemia due to immobilizationrelated bone resorption, leading to clinically significant
symptoms and complications.
Case:
A 59-year-old male with chronic tophaceous gout complicated with CKD and nephrocalcinosis was referred for
inpatient evaluation of hypercalcemia. He had an episode
of acute pancreatitis attributed to hypercalcemia 1 month
prior. Serum calcium levels have risen progressively over
the preceding year, from 2.48 mmol/L (reference 2.0–2.65)
to 3.17 mmol/L.
His gout was poorly controlled with uric acid levels ranging
641–709 umol/L, with extensive tophi over the upper and
lower limbs and gluteal regions. He had been maintained on
low-dose allopurinol 150 mg/day for 2 years. Functionally,
he was largely bedbound and wheelchair-dependent.
On admission, corrected calcium was 3.48 mmol/L with
suppressed intact parathyroid hormone (<0.6 pmol/L)
consistent with PTH-independent hypercalcemia. Malignancy and myeloma workup, including tumor markers, was unremarkable. Serum phosphate (0.9 mmol/L) and
alkaline phosphatase (152 IU/L) were normal.
Hypercalcemia persisted despite intravenous hydration
and calcitonin. Low-dose prednisolone was then initiated,
followed by pamidronate, resulting in normalization
of corrected calcium to 2.17 mmol/L. He remained
normocalcemic while on tapering prednisolone for a month.
However, calcium rebounded months after cessation.
Gradual escalation of allopurinol to 900 mg/day improves
uric acid levels to 389–429 umol/L with better functional
status (standing unsupported briefly and mobilizing
with assistance). However, calcium remains moderately
elevated 2.65–2.85 mmol/L.
Conclusion
This case highlights severe tophaceous gout as a rare but
significant cause of PTH-independent hypercalcemia, in
which glucocorticoids can be effective in treating refractory
hypercalcemia. It also underscores the importance of
addressing the underlying disease through optimization
of urate-lowering therapy and functional rehabilitation.
2.Delayed diagnosis and treatment of rheumatoid arthritis in Sarawak General Hospital
Sharifah Aishah Wan ; Cheng Lay Teh ; Yaw Kiet Cheong ; Ahmad Tirmizi Jobli
The Medical Journal of Malaysia 2020;75(2):141-145
Introduction: Rheumatoid arthritis (RA) is an autoimmune
systemic inflammatory disorder characterised by
symmetrical polyarthritis which leads to damage of joints if
untreated. Early diagnosis and treatment of RA to achieve
tight control of the disease will improve outcome and
prevent disability.
Objective: We aimed to examine the delays in the diagnosis
of RA in patients presenting to the Rheumatology Unit,
Sarawak General Hospital (SGH).
Methods: Data on demographics and various delays were
collected from the medical records from January 2015 until
March 2018. Patient delay is defined as from the time onset
of symptom to the first primary care presentation. Primary
care delay is defined as from the first primary care
presentation to referral to rheumatology. Rheumatology
delay is defined as from rheumatology referral to
appointment at the rheumatology clinic. Disease modifying
anti-rheumatic drugs (DMARDS) delay is defined as from the
rheumatology clinic appointment to starting DMARDS. Total
delay is from symptom onset to starting DMARDS.
Results: There were 84 new patients diagnosed with
rheumatoid arthritis, out of which 66 were females (78.6%).
The mean age was 54.1±12.0 years. Only 19 patients (22.6%)
were treated with DMARDS within 12 weeks of symptom
onset. The median time for patient delay was four weeks
(Interquartile range (IQR) 2-20 weeks), while the median time
primary care delay was 11 weeks (IQR 4-24 weeks). The
median time for rheumatology delay was zero weeks (IQR 0-
1 week) and the DMARDS delay was zero week (IQR 0). The
median time from symptom onset to DMARDS initiation was
23.5 weeks (IQR 13.25-51 weeks).
Conclusion: The delays in the diagnosis of rheumatoid
arthritis were mainly from the patient and primary care.


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